ardour-lv2-plugins 1:6.7.0+ds0~ubuntu-0ubuntu1 (armhf binary) in ubuntu impish

 Ardour is providing a set of LV2 plugins :
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 * a-comp.lv2: a compressor (mono & stereo versions)
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 * a-exp.lv2: an expander (mono & stereo versions)
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 * a-delay.lv2: a delay (mono version)
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 * a-eq.lv2: an equaliser (mono version)
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 * a-reverb.lv2: a reverberation (stereo version)
 .
 * a-fluidsynth.lv2: a SF2 player (stereo version)
 .
 * reasonablesynth.lv2: a reasonnably good piano synth (stereo version)
 .
 This package allows these to be used by other hosts as well.